HTMLchmod Calculator
Build Linux file permissions visually by toggling read/write/execute bits for owner, group, and others. Shows the numeric octal code (755, 644) and symbolic notation (rwxr-xr-x) in real time, plus the ready-to-run chmod command.
Ctrl+Enter to run | Ctrl+K to switch tools | Recent button shows input history
Repeating this work? Turn this kind of browser utility into an API batch, MCP prompt, extension workflow, or shared team recipe.
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What does 755 mean?
Owner can read, write, and execute. Group and others can read and execute. 755 is standard for directories and executable scripts.
What does 644 mean?
Owner can read and write. Group and others can only read. 644 is the standard permission for regular files like HTML, CSS, and config files.